Finding the Fourth Proportional to 3,839.35, 5,298.09 and 2,160.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,839.35 : 5,298.09 = 2,160.83 : x
2. Step 2: Convert to fraction form
   3,839.35/5,298.09 = 2,160.83/x
3. Step 3: Cross multiply
   3,839.35x = 5,298.09 × 2,160.83
4. Step 4: Simplify right side
   3,839.35x = 11,448,271.81
5. Step 5: Solve for x
   x = 11,448,271.81/3,839.35
6. Step 6: Final answer
   x = 2,981.83